Shanghai, China
June 24–26, 2019
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Tuesday, June 25 • 16:00 - 16:35
Dynamic Pod Resource Boundary Adjustment in Web Scale Clusters - Cheng Wang & Xiaoyu Zhang, Alibaba

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Have you ever confused about how to set perfect resource limit for Pod? How do you balance resource efficiency with application's SLO?

In this talk, we will share practices and lessons learned from adjusting Pod resource limits dynamically for Web-scale clusters at Alibaba Group by co-locating Pods with different QoS classes on the same node and adjusting Pod resource limits dynamically (especially during resource contention).

After applying this effort in production clusters, we were able to improve the cluster resource usage by 14%~30%, tail latency (95 percentile) by 76%~87%, and TPS (transactions per second) by 107%~163%, respectively.

The audiences would benefit from experience of improving the resource utilization and application performance for their own clusters, with Kubernetes native approaches.

avatar for Xiaoyu Zhang

Xiaoyu Zhang

Principal Engineer, Tencent
Xiaoyu Zhang is a principal engineer in Tencent Cloud. He worked for Alibaba Cloud as a senior engineer. He's a member of the Kubernetes organization. He mainly works on Kubernetes project and focuses on docs, kubectl, controller-manager, storage and runtime areas. He had multiple... Read More →
avatar for Cheng Wang

Cheng Wang

Software engineer, Alibaba
Cheng Wang is a software engineer at Alibaba Group, helping enhance cluster monitoring, resource management and scheduling with data-driven intelligence for Alibaba’s Web-scale clusters. Prior to joining Alibaba, he worked at VMware with the focus on Docker, Kubernetes and edge... Read More →

Tuesday June 25, 2019 16:00 - 16:35 CST